Polarization is when light strikes a surface. All the photons are vibrating in one direction instead of in random directions. The light travels from 'pole to pole' along that plane. Polarized Film works by filtering the waves of light by absorbing some of the reflected glare while letting some of the other light waves to pass through them. And then people invented Polarized sunglasses. They are designed to filter out horizontal light and the polarized lenses are mounted vertically in the frames and they must be carefully aligned so they will filter out the light waves.

Polarized lenses work well for boaters, fishermen, skiers, golfers, bikers, and joggers, who require a clearer view and elimination of glare. These sunglasses when used for driving, can reduce the glare that comes off the car or the surface of a road. Polarized sunglasses can also be used indoors by light sensitive people. While ordinary tinted lenses reduce brightness, only polarized lenses eliminate glare. While the first polarized sunglasses were used mainly by sportsmen, the general public has realized its many benefits, and now they have become so popular. But what is the working principle?

The first polarized lenses were a piece of polarizing film sandwiched between two layers of flat glass. Because glass lenses are so heavy, thinner and lighter plastic and polycarbonate lenses have become so popular. Early polarized sunglasses had problems with delamination, which is the separation of the polarizing film from the glass or plastic lenses. The making of modern lenses have solved this problem, the polarizing film is suspended inside the mold and the plastic is melted and poured in. The plastic then hardens around the piece of suspended polarized film, creating a solid material, rather than a layered one. Polycarbonate lenses are injection molded, so they are made a little differently. The heat from the injection molding would destroy the polarizing film, so the polarizing film is applied to the front of the lens and covered with a scratch resistant coating. Polycarbonate lenses are the lightest and thinnest polarized lenses available.

So, you know, in the Polarized Sunglasses in the manufacturing process, polarizing film is very important. Our company offers a variety of high quality of Polarizing Film, if you need, please contact us quickly!

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